As it happens every year, the 56th annual Grammy Awards featured a number of surprise, and at times somewhat far-fetched, collaborative performances. Among them was an unlikely pairing between R&B heartthrob Robin Thicke and classic-rock icons Chicago.

Several months after posting a series of demos from what's being billed as an upcoming album project, the members of Chicago have released the first single from the sessions, 'Somethin' Comin', I Know.'